<template>
	<view class="w-picker">
		<view class="mask" :class="{'show':showPicker}" @tap="maskTap" @touchmove.stop.prevent catchtouchmove="true"></view>
		<view class="w-picker-cnt" :class="{'show':showPicker}">
			<view class="w-picker-hd" @touchmove.stop.prevent catchtouchmove="true">
			  <view class="w-picker-btn" @tap="pickerCancel">取消</view>
			  <view class="w-picker-btn" :style="{'color':themeColor}" @tap="pickerConfirm">确定</view>
			</view>
			<view class="w-picker-view" v-if="mode=='date'">
				<picker-view :indicator-style="itemHeight" :value="pickVal" @change="bindChange">
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.years" :key="index">{{item}}年</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.months" :key="index">{{item}}月</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.days" :key="index">{{item}}日</view>
					</picker-view-column>
				</picker-view>
			</view>
			<view class="w-picker-view" v-if="mode=='yearMonth'">
				<picker-view :indicator-style="itemHeight" :value="pickVal" @change="bindChange">
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.years" :key="index">{{item}}年</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.months" :key="index">{{item}}月</view>
					</picker-view-column>
				</picker-view>
			</view>
			<view class="w-picker-view" v-if="mode=='dateTime'">
				<picker-view :indicator-style="itemHeight" :value="pickVal" @change="bindChange">
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.years" :key="index">{{item}}年</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.months" :key="index">{{item}}月</view>
					</picker-view-column>
					<picker-view-column >
						<view class="w-picker-item" v-for="(item,index) in data.days" :key="index">{{item}}日</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.hours" :key="index">{{item}}时</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.minutes" :key="index">{{item}}分</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.seconds" :key="index">{{item}}秒</view>
					</picker-view-column>
				</picker-view>
			</view>
			<view class="w-picker-view" v-if="mode=='range'">
				<picker-view :indicator-style="itemHeight" :value="pickVal" @change="bindChange">
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.fyears" :key="index">{{item}}</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.fmonths" :key="index">{{item}}</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.fdays" :key="index">{{item}}</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item">-</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.tyears" :key="index">{{item}}</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.tmonths" :key="index">{{item}}</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.tdays" :key="index">{{item}}</view>
					</picker-view-column>
				</picker-view>
			</view>
			<view class="w-picker-view" v-if="mode=='time'">
				<picker-view :indicator-style="itemHeight" :value="pickVal" @change="bindChange">
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.hours" :key="index">{{item}}时</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.minutes" :key="index">{{item}}分</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.seconds" :key="index">{{item}}秒</view>
					</picker-view-column>
				</picker-view>
			</view>
			<view class="w-picker-view" v-if="mode=='region'">
				<picker-view :indicator-style="itemHeight" :value="pickVal" @change="bindChange">
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.provinces" :key="index">{{item.label}}</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.citys" :key="index">{{item.label}}</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.areas" :key="index">{{item.label}}</view>
					</picker-view-column>
				</picker-view>
			</view>
			<view class="w-picker-view" v-if="mode=='selector'">
				<picker-view :indicator-style="itemHeight" :value="pickVal" @change="bindChange">
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data" :key="index">{{item.label}}</view>
					</picker-view-column>
				</picker-view>
			</view>
			<view class="w-picker-view" v-if="mode=='limit'">
				<picker-view :indicator-style="itemHeight" :value="pickVal" @change="bindChange">
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.date" :key="index">{{item.label}}</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.hours" :key="index">{{item.label}}时</view>
					</picker-view-column>
					<picker-view-column>
						<view class="w-picker-item" v-for="(item,index) in data.minutes" :key="index">{{item.label}}分</view>
					</picker-view-column>
				</picker-view>
			</view>
		</view>
	</view>
</template>

<script>
	import provinces from './city-data/province.js';
	import citys from './city-data/city.js';
	import areas from './city-data/area.js';
	import initPicker from "./w-picker.js";
	function oneOf (value, validList) {
		for (let i = 0; i < validList.length; i++) {
		  if (value === validList[i]) {
			return true;
		  }
		}
		console.log(new Error('mode无效，请选择有效的mode!'));
		return false;
	}
	export default {
		data() {
			return {
				result:[],
				data:{},
				checkArr:[],
				checkValue:[],
				pickVal:[],
				showPicker:false,
				resultStr:"",
				itemHeight:`height: ${uni.upx2px(88)}px;`
			};
		},
		computed:{
			
		},
		props:{
			mode:{
				type:String,
				validator(mode){
					let modeList=['date', 'dateTime', 'yearMonth','time','region','selector','limit','range'];//过滤无效mode;
					return oneOf(mode,modeList);
				},
				default(){
					return "date"
				}
			},
			themeColor:{
				type:String,
				default(){
					return "#f5a200"
				}
			},
			startYear:{
				type:[String,Number],
				default(){
					return "1970"
				}
			},
			endYear:{
				type:[String,Number],
				default(){
					return new Date().getFullYear()+''
				}
			},
			defaultVal:{
				type:Array,
				default(){
					return [0,0,0,0,0,0,0]
				}
			},
			step:{
				type:[String,Number],
				default:1
			},
			current:{
				type:Boolean,
				default:false
			},
			selectList:{
				type:Array,
				default(){
					return [];
				}
			},
			//以下参数仅对mode==limit有效
			dayStep:{
				type:[String,Number],
				default:7
			},
			startHour:{
				type:[String,Number],
				default:8
			},
			endHour:{
				type:[String,Number],
				default:20
			},
			minuteStep:{
				type:[String,Number],
				default:10
			},
			afterStep:{
				type:[String,Number],
				default:30
			}
		},
		watch:{
			mode(){
				this.initData();
			},
			selectList(){
				this.initData();
			}
		},
		methods:{
			useCurrent(){
				let aToday=new Date();
				let tYear=aToday.getFullYear().toString();
				let tMonth=this.formatNum(aToday.getMonth()+1).toString();
				let tDay=this.formatNum(aToday.getDate()).toString();
				let tHours=this.formatNum(aToday.getHours()).toString();
				let tMinutes=this.formatNum(aToday.getMinutes()).toString();
				let tSeconds=this.formatNum(aToday.getSeconds()).toString();
				if(this.current){
					return [tYear,tMonth,tDay,tHours,(Math.floor(tMinutes/this.step)*this.step).toString(),tSeconds];
				}else{
					return this.defaultVal;
				}
			},
			formatNum(num){
				return num<10?'0'+num:num+'';
			},
			maskTap(){
				this.showPicker = false;
			},
			show(){
				this.showPicker = true;
			},
			hide(){
				this.showPicker = false;
			},
			pickerCancel(){
				this.$emit("cancel",{
					checkArr:this.checkArr,
					defaultVal:this.pickVal
				});
				this.showPicker = false;
			},
			pickerConfirm(e){
				switch(this.mode){
					case "range":
						let checkArr=this.checkArr;
						let fDateTime=new Date(checkArr[0],checkArr[1],checkArr[2]);
						let tDateTime=new Date(checkArr[3],checkArr[4],checkArr[5]);
						if(fDateTime>tDateTime){
							uni.showModal({
								title:"提示",
								content:"结束日期不能小于开始时间",
								confirmColor:this.themeColor
							});
							return;
						}
						this.$emit("confirm",{
							checkArr:this.checkArr,
							from:checkArr[0]+"-"+checkArr[1]+"-"+checkArr[2],
							to:checkArr[3]+"-"+checkArr[4]+"-"+checkArr[5],
							defaultVal:this.pickVal,
							result:this.resultStr
						});
						break;
					case "limit":
						let aTime=new Date().getTime();
						let bTime=new Date(this.resultStr.replace(/-/g,'/')).getTime();
						if(aTime>bTime){
							uni.showModal({
								title:"提示",
								content:"选择时间必须大于当前时间",
								confirmColor:this.themeColor
							});
							return;
						}
						this.$emit("confirm",{
							checkArr:this.checkArr,
							defaultVal:this.pickVal,
							result:this.resultStr
						});
						break;
					case "region":
						this.$emit("confirm",{
							checkArr:this.checkArr,
							checkValue:this.checkValue,
							defaultVal:this.pickVal,
							result:this.resultStr
						});
						break;
					default:
						this.$emit("confirm",{
							checkArr:this.checkArr,
							defaultVal:this.pickVal,
							result:this.resultStr
						});
						break;
				}
				this.showPicker = false;
			},
			bindChange(val){
				let _this=this;
				let arr=val.detail.value;
				let year="",month="",day="",hour="",minute="",second="",province,city,area;
				let checkArr=_this.checkArr;
				let days=[];
				let mode=_this.mode;
				switch(mode){
					case "limit":
						let col1,col2;
						col1=_this.data.date[arr[0]];
						//col2=_this.data.hours[arr[1]];
						if(col1.flag){
							col2=_this.data.hours[arr[1]];
							_this.data=initPicker.limit(_this.dayStep,_this.starHour,_this.endHour,_this.minuteStep,_this.afterStep);
							if(!col2.flag){
								let minutes=initPicker.initLimitMinutes(_this.minuteStep);
								_this.data.minutes=minutes;
							}else{
								_this.data=initPicker.limit(_this.dayStep,_this.starHour,_this.endHour,_this.minuteStep,_this.afterStep);
							};
						}else{
							let hours=initPicker.initLimitHours(_this.startHour,_this.endHour);
							let minutes=initPicker.initLimitMinutes(_this.minuteStep);
							_this.data.hours=hours;
							_this.data.minutes=minutes;
						}
						let d=_this.data.date[arr[0]];
						let h=_this.data.hours[arr[1]];
						let m=_this.data.minutes[arr[2]];
						_this.checkArr=[d,h,m];
						_this.resultStr=`${d.value+' '+((h&&h.value)||'')+':'+((m&&m.value)||'')+":"+"00"}`;
						break;
					case "range":
						let fyear=_this.data.fyears[arr[0]];
						let fmonth=_this.data.fmonths[arr[1]];
						let fday=_this.data.fdays[arr[2]];
						let tyear=_this.data.tyears[arr[4]];
						let tmonth=_this.data.tmonths[arr[5]];
						let tday=_this.data.tdays[arr[6]];
						if(fyear!=checkArr[0]){
							days=initPicker.initRangeDays(fyear,fmonth);
							_this.data.fdays=days;
						};
						if(fmonth!=checkArr[1]){
							days=initPicker.initRangeDays(fyear,fmonth);
							_this.data.fdays=days;
						};
						if(tyear!=checkArr[3]){
							days=initPicker.initRangeDays(tyear,tmonth);
							_this.data.tdays=days;
						};
						if(tmonth!=checkArr[4]){
							days=initPicker.initRangeDays(tyear,tmonth);
							_this.data.tdays=days;
						};
						_this.checkArr=[fyear,fmonth,fday,tyear,tmonth,tday];
						_this.resultStr=`${fyear+'-'+fmonth+'-'+fday+'至'+tyear+'-'+tmonth+'-'+tday}`;
						break;	
					case "date":
						year=_this.data.years[arr[0]];
						month=_this.data.months[arr[1]];
						day=_this.data.days[arr[2]];
						if(year!=checkArr[0]){
							days=initPicker.initDays(year,month);
							_this.data.days=days;
						};
						if(month!=checkArr[1]){
							days=initPicker.initDays(year,month);
							_this.data.days=days;
						};
						_this.checkArr=[year,month,day];
						_this.resultStr=`${year+'-'+month+'-'+day}`;
						break;
					case "yearMonth":
						year=_this.data.years[arr[0]];
						month=_this.data.months[arr[1]];
						_this.checkArr=[year,month];
						_this.resultStr=`${year+'-'+month}`;
						break;
					case "dateTime":
						year=_this.data.years[arr[0]];
						month=_this.data.months[arr[1]];
						day=_this.data.days[arr[2]];
						hour=_this.data.hours[arr[3]];
						minute=_this.data.minutes[arr[4]];
						second=_this.data.seconds[arr[5]];
						if(year!=checkArr[0]){
							days=initPicker.initDays(year,month);
							_this.data.days=days;
						};
						if(month!=checkArr[1]){
							days=initPicker.initDays(year,month);
							_this.data.days=days;
						};
						_this.checkArr=[year,month,day,hour,minute,second];
						_this.resultStr=`${year+'-'+month+'-'+day+' '+hour+':'+minute+':'+second}`;
						break;
					case "time":
						hour=_this.data.hours[arr[0]];
						minute=_this.data.minutes[arr[1]];
						second=_this.data.seconds[arr[2]];
						_this.checkArr=[hour,minute,second];
						_this.resultStr=`${hour+':'+minute+':'+second}`;
						break;
					case "region":
						province=_this.data.provinces[arr[0]].label;
						city=_this.data.citys[arr[1]].label;
						area=_this.data.areas[arr[2]].label;
						if(province!=checkArr[0]){
							_this.data.citys = citys[arr[0]];
							_this.data.areas = areas[arr[0]][0];
							arr[1] = 0;
							arr[2] = 0;
							city=_this.data.citys[arr[1]].label;
							area=_this.data.areas[arr[2]].label;
						};
						if(city!=checkArr[1]){
							_this.data.areas = areas[arr[0]][arr[1]];
							arr[2]=0;
							area=_this.data.areas[arr[2]].label;
						};
						_this.checkArr=[province,city,area];
						_this.checkValue=[_this.data.provinces[arr[0]].value,_this.data.citys[arr[1]].value,_this.data.areas[arr[2]].value];
						_this.resultStr=province+city+area;
						break;
					case "selector":
						_this.checkArr=_this.data[arr[0]];
						_this.resultStr=_this.data[arr[0]].label;
						break;	
				}
				_this.$nextTick(()=>{
					_this.pickVal=arr;
				})
			},
			initData(){
				let _this=this;
				let data={};
				let mode=_this.mode;
				let year,month,day,hour,minute,second,province,city,area;
				if(mode=="region"){
					data={
						provinces:provinces,
						citys:citys[_this.defaultVal[0]],
						areas:areas[_this.defaultVal[0]][_this.defaultVal[1]]
					};
				}else if(mode=="selector"){
					data=_this.selectList;
				}else if(mode=="limit"){
					data=initPicker.limit(_this.dayStep,_this.starHour,_this.endHour,_this.minuteStep,_this.afterStep);
				}else if(mode=="range"){
					data=initPicker.range(_this.startYear,_this.endYear,_this.useCurrent(),_this.current);
				}else{
					data=initPicker.date(_this.startYear,_this.endYear,_this.mode,_this.step,_this.useCurrent(),_this.current);
				};
				_this.data=data;
				let dVal=(data.defaultVal&&_this.current)?data.defaultVal:_this.defaultVal;
				switch(mode){
					case "limit":
						let col1,col2,col3;
						col1=data.date[dVal[0]];
						col2=data.hours[dVal[1]];
						col3=data.minutes[dVal[2]];
						_this.checkArr=[col1,col2,col3];
						_this.resultStr=`${col1.value+' '+col2.value+':'+col3.value+":"+"00"}`;
						break;
					case "range":
						let fYear=data.fyears[dVal[0]];
						let fmonth=data.fmonths[dVal[1]];
						let fday=data.fdays[dVal[2]];
						let tYear=data.tyears[dVal[4]];
						let tmonth=data.tmonths[dVal[5]];
						let tday=data.tdays[dVal[6]];
						_this.checkArr=[fYear,fmonth,fday,tYear,tmonth,tday];
						_this.resultStr=`${fYear+'-'+fmonth+'-'+fday+'至'+tYear+'-'+tmonth+'-'+tday}`;
						break;
					case "date":
						year=data.years[dVal[0]];
						month=data.months[dVal[1]];
						day=data.days[dVal[2]];
						_this.checkArr=[year,month,day];
						_this.resultStr=`${year+'-'+month+'-'+day}`;
						break;
					case "yearMonth":
						year=data.years[dVal[0]];
						month=data.months[dVal[1]];
						_this.checkArr=[year,month];
						_this.resultStr=`${year+'-'+month}`;
						break;
					case "dateTime":
						year=data.years[dVal[0]];
						month=data.months[dVal[1]];
						day=data.days[dVal[2]];
						hour=data.hours[dVal[3]];
						minute=data.minutes[dVal[4]];
						second=data.seconds[dVal[5]];
						_this.resultStr=`${year+'-'+month+'-'+day+' '+hour+':'+minute+':'+second}`;
						_this.checkArr=[year,month,day,hour,minute];
						break;
					case "time":
						hour=data.hours[dVal[0]];
						minute=data.minutes[dVal[1]];
						second=data.seconds[dVal[2]];
						_this.checkArr=[hour,minute,second];
						_this.resultStr=`${hour+':'+minute+':'+second}`;
						break;
					case "region":
						province=data.provinces[dVal[0]];
						city=data.citys[dVal[1]];
						area=data.areas[dVal[2]];
						_this.checkArr=[province.label,city.label,area.label];
						_this.checkValue=[province.value,city.value,area.value];
						_this.resultStr=province.label+city.label+area.label;
						break;
					case "selector":
						_this.checkArr=data[dVal[0]];
						_this.resultStr=data[dVal[0]].label;
						break;
				}
				_this.$nextTick(()=>{
					if(data.defaultVal&&_this.current){
						_this.pickVal=data.defaultVal;
					}else{
						_this.pickVal=_this.defaultVal;
					}
				})
			}
		},
		mounted() {
			this.initData();
		}
	}
</script>

<style lang="scss">
	.w-picker{
		position: relative;
		z-index: 888;
		.mask {
		  position: fixed;
		  z-index: 1000;
		  top: 0;
		  right: 0;
		  left: 0;
		  bottom: 0;
		  background: rgba(0, 0, 0, 0.6);
		  visibility: hidden;
		  opacity: 0;
		  transition: all 0.3s ease;
		}
		.mask.show{
			visibility: visible;
			opacity: 1;
		}
		.w-picker-cnt {
		  position: fixed;
		  bottom: 0;
		  left: 0;
		  width: 100%;
		  transition: all 0.3s ease;
		  transform: translateY(100%);
		  z-index: 3000;
		}
		.w-picker-cnt.show {
		  transform: translateY(0);
		}
		.w-picker-hd {
		  display: flex;
		  align-items: center;
		  padding: 0 30upx;
		  height: 88upx;
		  background-color: #fff;
		  position: relative;
		  text-align: center;
		  font-size: 32upx;
		  justify-content: space-between;
		  .w-picker-btn{
		  	font-size: 30upx;
		  }
		}
		
		.w-picker-hd:after {
		  content: ' ';
		  position: absolute;
		  left: 0;
		  bottom: 0;
		  right: 0;
		  height: 1px;
		  border-bottom: 1px solid #e5e5e5;
		  color: #e5e5e5;
		  transform-origin: 0 100%;
		  transform: scaleY(0.5);
		}
		.w-picker-item {
		  text-align: center;
		  width: 100%;
		  height: 88upx;
		  line-height: 88upx;
		  text-overflow: ellipsis;
		  white-space: nowrap;
		  font-size: 30upx;
		}
		.w-picker-view {
		  width: 100%;
		  height: 476upx;
		  overflow: hidden;
		  background-color: rgba(255, 255, 255, 1);
		  z-index: 666;
		}
		picker-view{
			height: 100%;
		}
	}

</style>
